enrol/manual/ajax.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * This file processes AJAX enrolment actions and returns JSON for the manual enrolments plugin
  19  *
  20  * The general idea behind this file is that any errors should throw exceptions
  21  * which will be returned and acted upon by the calling AJAX script.
  22  *
  23  * @package    enrol_manual
  24  * @copyright  2010 Sam Hemelryk
  25  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  26  */
  27
  28 define('AJAX_SCRIPT', true);
  29
  30 require('../../config.php');
  31 require_once($CFG->dirroot.'/enrol/locallib.php');
  32 require_once($CFG->dirroot.'/group/lib.php');
  33
  34 $id      = required_param('id', PARAM_INT); // Course id.
  35 $action  = required_param('action', PARAM_ALPHANUMEXT);
  36
  37 $PAGE->set_url(new moodle_url('/enrol/ajax.php', array('id'=>$id, 'action'=>$action)));
  38
  39 $course = $DB->get_record('course', array('id'=>$id), '*', MUST_EXIST);
  40 $context = context_course::instance($course->id, MUST_EXIST);
  41
  42 if ($course->id == SITEID) {
  43     throw new moodle_exception('invalidcourse');
  44 }
  45
  46 require_login($course);
  47 require_capability('moodle/course:enrolreview', $context);
  48 require_sesskey();
  49
  50 echo $OUTPUT->header(); // Send headers.
  51
  52 $manager = new course_enrolment_manager($PAGE, $course);
  53
  54 $outcome = new stdClass();
  55 $outcome->success = true;
  56 $outcome->response = new stdClass();
  57 $outcome->error = '';
  58
  59 $searchanywhere = get_user_preferences('userselector_searchanywhere', false);
  60
  61 switch ($action) {
  62     case 'getassignable':
  63         $otheruserroles = optional_param('otherusers', false, PARAM_BOOL);
  64         $outcome->response = array_reverse($manager->get_assignable_roles($otheruserroles), true);
  65         break;
  66     case 'searchusers':
  67         $enrolid = required_param('enrolid', PARAM_INT);
  68         $search = optional_param('search', '', PARAM_RAW);
  69         $page = optional_param('page', 0, PARAM_INT);
  70         $addedenrollment = optional_param('enrolcount', 0, PARAM_INT);
  71         $perpage = optional_param('perpage', 25, PARAM_INT);  //  This value is hard-coded to 25 in quickenrolment.js
  72         $outcome->response = $manager->get_potential_users($enrolid, $search, $searchanywhere, $page, $perpage, $addedenrollment);
  73         $extrafields = get_extra_user_fields($context);
  74         foreach ($outcome->response['users'] as &$user) {
  75             $user->picture = $OUTPUT->user_picture($user);
  76             $user->fullname = fullname($user);
  77             $fieldvalues = array();
  78             foreach ($extrafields as $field) {
  79                 $fieldvalues[] = s($user->{$field});
  80                 unset($user->{$field});
  81             }
  82             $user->extrafields = implode(', ', $fieldvalues);
  83         }
  84         // Chrome will display users in the order of the array keys, so we need
  85         // to ensure that the results ordered array keys. Fortunately, the JavaScript
  86         // does not care what the array keys are. It uses user.id where necessary.
  87         $outcome->response['users'] = array_values($outcome->response['users']);
  88         $outcome->success = true;
  89         break;
  90     case 'enrol':
  91         $enrolid = required_param('enrolid', PARAM_INT);
  92         $userid = required_param('userid', PARAM_INT);
  93
  94         $roleid = optional_param('role', null, PARAM_INT);
  95         $duration = optional_param('duration', 0, PARAM_INT);
  96         $startdate = optional_param('startdate', 0, PARAM_INT);
  97         $recovergrades = optional_param('recovergrades', 0, PARAM_INT);
  98
  99         if (empty($roleid)) {
 100             $roleid = null;
 101         }
 102
 103         switch($startdate) {
 104             case 2:
 105                 $timestart = $course->startdate;
 106                 break;
 107             case 3:
 108             default:
 109                 $today = time();
 110                 $today = make_timestamp(date('Y', $today), date('m', $today), date('d', $today), 0, 0, 0);
 111                 $timestart = $today;
 112                 break;
 113         }
 114         if ($duration <= 0) {
 115             $timeend = 0;
 116         } else {
 117             $timeend = $timestart + ($duration*24*60*60);
 118         }
 119
 120         $user = $DB->get_record('user', array('id'=>$userid), '*', MUST_EXIST);
 121         $instances = $manager->get_enrolment_instances();
 122         $plugins = $manager->get_enrolment_plugins(true); // Do not allow actions on disabled plugins.
 123         if (!array_key_exists($enrolid, $instances)) {
 124             throw new enrol_ajax_exception('invalidenrolinstance');
 125         }
 126         $instance = $instances[$enrolid];
 127         if (!isset($plugins[$instance->enrol])) {
 128             throw new enrol_ajax_exception('enrolnotpermitted');
 129         }
 130         $plugin = $plugins[$instance->enrol];
 131         if ($plugin->allow_enrol($instance) && has_capability('enrol/'.$plugin->get_name().':enrol', $context)) {
 132             $plugin->enrol_user($instance, $user->id, $roleid, $timestart, $timeend);
 133             if ($recovergrades) {
 134                 require_once($CFG->libdir.'/gradelib.php');
 135                 grade_recover_history_grades($user->id, $instance->courseid);
 136             }
 137         } else {
 138             throw new enrol_ajax_exception('enrolnotpermitted');
 139         }
 140         $outcome->success = true;
 141         break;
 142
 143     default:
 144         throw new enrol_ajax_exception('unknowajaxaction');
 145 }
 146
 147 echo json_encode($outcome);